\documentclass[openany,twocolumn]{ctexbook}
\usepackage{amsmath,amssymb,mathtools,upgreek}
\usepackage{fourier,esint,bm}
\makeatletter
\def\vdots@i#1#2#3{\vbox{
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  \kern#3\p@\hbox{.}\hbox{.}\hbox{.}}}
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  \mathchoice
	{\vdots@i{}{4}{6}}
	{\vdots@i{}{4}{6}}
	{\vdots@i{\scriptsize}{2}{1}}
	{\vdots@i{\tiny}{2}{1}}
}
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\usepackage{physics,siunitx,lastpage,graphicx}
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\renewcommand\thefigure{\arabic{chapter}-\arabic{section}-\arabic{figure}}
\usepackage{floatrow,subcaption}
\renewcommand\thesubfigure{(\alph{subfigure})}
\captionsetup[sub]{labelformat=simple}
\xeCJKDeclareCharClass{FullRight}{"2236}
\newcommand\ratio[2]{#1^^^^2236#2}

\usepackage[a4paper,top=2.5cm,bottom=2.5cm,inner=1.5cm,outer=3cm]{geometry}
\usepackage[toc]{multitoc}

\usepackage{tikz}
\usetikzlibrary{shapes.geometric,calc}
\newcommand*{\circled}[1]{\lower.7ex\hbox{\tikz\draw (0pt, 0pt)%
	circle (.5em) node {\makebox[1em][c]{\small #1}};}}
\let\libcirc\circled

\makeatletter
\newcommand{\rmnum}[1]{\romannumeral #1}
\newcommand{\Rmnum}[1]{\expandafter\@slowromancap\romannumeral #1@}
\makeatother

\usepackage{wallpaper}
\renewcommand{\CenterWallPaper}[2]{%
\AddToShipoutPicture{\put(\LenToUnit{\wpXoffset},\LenToUnit{\wpYoffset}){%
	 \parbox[b][\paperheight]{\paperwidth}{%
		\vfill
		\centering
		\tikz[opacity=0.075] \node[inner sep=0pt] {\includegraphics[angle=90,width=#1\paperwidth,height=#1\paperheight,keepaspectratio]{#2}};%
		\vfill
	 }}
  }
}
\CenterWallPaper{1}{figure/wallpaper.pdf}

\usepackage{tabularx,diagbox}

\setlength{\headheight}{13pt}
\makeatletter
\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhf{}
\fancyhead[LO]{\bfseries \rightmark}
\fancyhead[RE]{\bfseries \leftmark}
\fancyhead[C]{\bfseries 仅供学习使用，严禁商业使用}
\fancyfoot[C]{\zihao{-5} {\kaishu 不论一个人的数学水平有多高，只要对数学拥有一颗真诚的心，他就在自己的心灵上得到了升华。}---{\itshape SCIbird}}
\fancyhead[LE,RO]{\bfseries --\thepage/\pageref{LastPage}--}
\makeatother

\usepackage{caption}
\captionsetup{labelsep=space}


\usepackage{theorem}
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	chapter={
		name={},
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	section={
		format={\zihao{4}\bfseries\centering},
		name={第,章},
		aftername={\hspace{1em}},
		number=\chinese{section},
	},
	subsection={
		format={\zihao{-4}\bfseries\raggedright},
		name={,、},
		aftername={\hspace{0bp}},
		number=\chinese{subsection},
	},
	subsubsection={
		format={\zihao{-4}\bfseries\raggedright},
		name={},
		aftername={\hspace{5bp}},
		number={\arabic{section}.\arabic{subsection}.\arabic{subsubsection}},
	},
}

{
	\theoremstyle{change}
	\theoremheaderfont{\bfseries}
	\theorembodyfont{\normalfont}
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}
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{
	\theoremstyle{change}
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	\newtheorem{titwo}{}[chapter]
}
\renewcommand{\thetitwo}{\arabic{titwo}.}

\def\htwo{\CJKunderline*[hidden = true]{瞻彼阕者虚室生白}}
\def\kuo{ \mbox{(\hspace{1pc})}}

\newcommand{\fourch}[4]{\noindent\begin{tabular}{*{4}{@{}p{1.97cm}}}(\texttt{A})~#1 & (\texttt{B})~#2 & (\texttt{C})~#3 & (\texttt{D})~#4\end{tabular}}
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\newcommand{\onech}[4]{\noindent(\texttt{A})~#1 \\ (\texttt{B})~#2 \\ (\texttt{C})~#3 \\ (\texttt{D})~#4}

\def\leq{\leqslant}
\def\geq{\geqslant}
\def\ee{\mathrm{e}}
\def\CC{\mathrm{C}}
\def\TT{\mathrm{T}}
\def\AA{\mathrm{A}}
\def\astt{*}
\edef\lim{\lim\limits}
\edef\sum{\sum\limits}
\let\div\relax
\DeclareMathOperator{\div}{div}
\let\grad\relax
\DeclareMathOperator{\grad}{grad}
\DeclareMathOperator{\rot}{rot}
\DeclareMathOperator{\Cov}{Cov}
\long\def\guanggao{
	\vspace*{\fill}
	\begin{center}
		\bfseries 广告位招租
	\end{center}
	\vspace*{\fill}
}
\def\theenumi{\arabic{enumi}}
\def\labelenumi{(\theenumi)}

\setCJKmainfont{SourceHanSerifCN}[
UprightFont    = *-Regular,
BoldFont       = *-Bold,
ItalicFont     = *-Regular,
BoldItalicFont = *-Bold
]
\setCJKfamilyfont{kaishu}{FZXKTJW.ttf}
\def\kaishu{\CJKfamily{kaishu}}

\usepackage[bookmarksopen=true,bookmarksnumbered=true,hidelinks,pdftitle=2020张宇1000题(数一),pdfauthor=张宇]{hyperref}

\title{张宇考研数学题源探析经典 1000 题\\(习题分册·数学一)\thanks{Build time：\today，Releases：v1.0}}
\author{张宇}
\date{2019 年 3 月}


\begin{document}
	\frontmatter
	\maketitle
	\input{chapter/chap0.tex}
	\tableofcontents
	\mainmatter
	\input{chapter/chap1.tex}
	\input{chapter/chap2.tex}
	\input{chapter/chap3.tex}
\end{document}